TY  - BOOK
AU  - FREEDMAN Maurice
TI  - Unravelling enigma: winning the code war at Station X 
SN  - 080528100 (pbk) :
PY  - 2001///
CY  - Barnsley UK
PB  - Pen & Sword
KW  - SECOND WORLD WAR
KW  - SIGNALS INTELLIGENCE
KW  - BLETCHLEY PARK
KW  - ENIGMA PROJECT
KW  - CODE BREAKING
ER  -